Laundry appliance housing with specific embossing, as well as household appliance

Abstract

One aspect of the invention relates to a laundry care appliance housing (2) with a side wall (3, 4) having an integrated embossed structure (41) with which the side wall (3, 4) is stiffened, wherein the embossed structure (41) has an embossed strip (42) which is closed all around, so that an inner side wall area (43) surrounded and thereby bounded by the embossed strip (42) is formed, characterized in that at least two separate, internal embossed elements (44, 45) are formed in the inner side wall area (43), which are also separate from the embossed strip (42), wherein the internal embossed elements (44, 45) are designed as not being closed all around. Another aspect relates to a household appliance (1) for the care of laundry items.

Description

[0001] One aspect of the invention relates to a laundry care appliance housing with a side wall that has an integrated embossed structure, which stiffens the side wall. The embossed structure has an embossed strip that is closed on its own. An inner side wall area surrounded and thereby bounded by the embossed strip is thus formed. Another aspect of the invention relates to a household appliance for the care of laundry items with such a laundry care appliance housing.

[0002] From EP 0 043 429 A1, a multi-part plastic tub is known. The connection area between the individual parts of the tub is relatively large and thus projects far outwards in the radial direction to the tub's longitudinal axis. Since a tub, like a washing drum, is part of a vibrating system in a household appliance for laundry care, a relative movement of this tub and the washing drum occurs during operation relative to the appliance's housing in which this system is located. To prevent the tub from striking the walls of this housing during this relative movement, it is necessary to set a corresponding horizontal distance that ensures the tub does not strike a wall, such as a side wall, of the housing, even during operation.

[0003] In particular, to save energy during laundry care, it is desirable to be able to care for more laundry per care cycle.

[0004] This requirement, and also the desire to be able to care for more laundry per care cycle with existing and especially standardized external dimensions of a household appliance, requires appropriate design.

[0005] However, in known devices, this is countered by an embossed structure on a vertical side wall, which is usually very centrally located and therefore restricts the installation space, especially in the area of ​​a joining interface between parts of a tub.

[0006] The object of the present invention is to create a laundry care appliance housing and a household appliance for the care of laundry items, with which more laundry items can be cared for per care process.

[0007] This task is solved by a laundry care appliance housing and a household appliance in accordance with the independent claims.

[0008] One aspect of the invention relates to a laundry care appliance housing, i.e., a housing designed for use in a household appliance for the care of laundry items, i.e., a laundry care appliance. The laundry care appliance housing has a side wall, in particular a vertical one, which has an integrated embossed structure that stiffens the side wall. The embossed structure has an embossed strip that is closed on its own. An inner side wall area surrounded and thereby bounded by the embossed strip is thus formed. The embossed structure is, in particular, a side wall stiffening embossed structure.

[0009] The inner side wall area features at least two separate, internal embossing elements. These embossing elements are separate from the embossing strip and thus completely spaced apart or separate from it. The internal embossing elements are not completely enclosed.

[0010] By combining different embossed elements that differ in shape and position from each other and are specifically arranged in relation to each other, a high degree of stiffening of the side wall is achieved, yet a specifically shaped free area is created in the center of the embossed structure, i.e., in the preferably non-embossed area of ​​the side wall, which offers more space for other components of the device, in particular the interface of a detergent container, and especially also of preferably joined individual parts of the detergent container.

[0011] This allows the tub and drum to be made larger, yet they do not touch the side wall in the area of ​​the embossed structure during operation.

[0012] In one embodiment, the embossing elements are symmetrical about an axis, i.e., an axis of symmetry, of the embossing structure. This axis of symmetry is preferably a horizontal axis. It is oriented, in particular, in the depth direction of the housing.

[0013] In one embodiment, the embossing elements are designed as embossing arcs. In particular, they are convexly curved. This defines a specific central area of ​​the side wall. Specifically, a defined upper and lower boundary is formed in the vertical direction. The positional and geometric interaction between the embossing strip, which defines the side wall area, and the embossing elements results in this central area of ​​the side wall, which is not embossed and therefore does not have a further embossing element, resembling an ellipse. This shape particularly enhances the advantages mentioned above. This elliptical or ellipse-like shape is thus defined by the embossing elements and the remaining area of ​​the embossing strip where the embossing elements are not present.

[0014] In one embodiment, the embossing sheets have the same radius along their entire length. This creates a highly individual boundary contour for at least these contour sections in the aforementioned central area.

[0015] In one embodiment, the embossing arches have a variable radius along their entire length. The change can be continuous, forming the shape of a bridge arch. However, an embodiment is also possible in which there is at least one relatively abrupt change in radius. In this case, the embossing element can also be boomerang-shaped.

[0016] In one embodiment, the embossing sheets have a length less than a circumferential length of 180° formed around a center point of the embossing structure. In particular, the circumferential length can be between 90° and 160°. This also results in the aforementioned advantages, especially on the one hand, local stiffening, and on the other hand, the individual shaping of the central area.

[0017] In particular, this supports the creation of a very individual shape of the central, unembossed area of ​​the side wall, which allows more space inwards to position the interface of the lye container locally adjacent to it.

[0018] In one embodiment, the embossing sheets are formed as strips. This also supports the aforementioned advantages and produces relatively delicate embossing elements.

[0019] In one embodiment, the embossing sheets have a triangular shape. They are then specifically formed as triangular troughs. This allows for the provision of highly specific embossing elements, which also enable the specific shaping of the central area and partially delimit this central area. This also promotes the stiffening of the central area, particularly by forming the boundary with such specific troughs.

[0020] In one embodiment, as already explained, the embossing strip and the embossing sheets form at least a predominantly elliptical or ellipse-like boundary contour for a surface area thereby limited in the inner side wall region, i.e., the aforementioned central area. In particular, the elliptical shape is formed as an approximation.

[0021] In one embodiment, the embossing strip is designed as a circular ring. This creates a highly symmetrical embossing element. This stiffening is particularly advantageous and, in conjunction with the embossing elements in the horizontal direction, especially in the depth direction, enables the longer axis of the elliptical shape of the central area. In the vertical direction, this results in the shorter axis of the elliptical shape of the central area. This also achieves the specific orientation of the elliptical shape and provides a very specific installation space for the adjacent interface of the lye container, particularly in terms of geometry and location.

[0022] In one embodiment, the embossing strip is designed as a ring with a variable radius. It can, for example, be shaped like a rhombus. It can also be shaped like a square with rounded corners.

[0023] In one embodiment, the embossing structure has further, outer embossing elements formed in an outer side wall region of the side wall, wherein the outer side wall region is separated from the inner side wall region by the embossing strip. This improves the stiffening.

[0024] In one embodiment, the outer embossing elements are not completely closed. They can have an arc shape. They can also be boomerang-shaped.

[0025] In one embodiment, the distance between two ends of the at least two embossing elements, viewed in the plane of the side wall, is smaller than the distance between opposite points of the embossing strip, measured in the plane of the side wall and through a center point of the embossing structure. In particular, this supports an elliptical or elliptical-like, or approximately elliptical, shape for the central, unembossed area of ​​the inner side wall region.

[0026] The distance between the ends of the two separate embossing elements is preferably between 120 mm and 180 mm, more particularly between 140 mm and 160 mm, and more particularly between 145 mm and 155 mm. This distance is measured between the ends on the same side of the embossing elements. In particular, this distance is measured vertically, specifically between axially symmetrical ends of the two embossing elements.

[0027] The distance between the ends of an embossing element, i.e., the two ends belonging to an embossing element, is preferably between 240 mm and 300 mm, particularly between 260 mm and 290 mm, and especially between 270 mm and 280 mm. This distance is particularly horizontal.

[0028] The distance between opposing points of the embossing strip is preferably between 350 mm and 480 mm, particularly between 400 mm and 440 mm, and especially between 410 mm and 430 mm. It is preferably dimensioned horizontally, particularly in the depth direction. This distance is particularly perpendicular to the distance between the ends of the embossing elements and is measured through the center point of the embossing structure.

[0029] In one embodiment, the embossing strip has a thickness of between 25 mm and 35 mm, in particular between 28 mm and 32 mm. This thickness is measured perpendicular to the longitudinal axis of the embossing strip.

[0030] In one embodiment, an embossing element has a thickness of between 25 mm and 35 mm, in particular between 28 mm and 32 mm. This thickness is measured perpendicular to the longitudinal axis of the embossing strip.

[0031] In one embodiment, the embossing strip, viewed along its longitudinal axis, has a flare length at at least one end, which is between 50 mm and 65 mm, and in particular between 55 mm and 60 mm. The flare length refers to the distance over which the embossed level rises from the bottom of the embossing strip to the level of the adjacent unembossed area of ​​the side wall. Such a relatively large flare length avoids abrupt changes in level. This also supports the advantages mentioned above.

[0032] In one embodiment, at least one embossing element has a sweep length at at least one end, viewed along its longitudinal axis, which is between 50 mm and 65 mm, and in particular between 55 mm and 60 mm. The sweep length refers to the distance over which the embossed level rises from the bottom of the embossing element to the level of the adjacent unembossed area of ​​the side wall region. Such a relatively large sweep length avoids abrupt changes in level. This also supports the advantages mentioned above.

[0033] In one embodiment, at least a partial area of ​​the inner side wall is offset, particularly outwards, in a direction perpendicular to the plane in which the side wall spans, compared to an outer side wall area separated from the inner side wall area by the embossing strip. Preferably, this offset is between 0.5 mm and 2 mm, particularly between 0.5 mm and 1.5 mm, and more specifically between 0.8 mm and 1.2 mm. The partial area can comprise the unembossed or unembossed area of ​​the inner side wall area. It can also be provided that the embossing elements of the inner side wall area are formed outwards by this offset. Therefore, the entire inner side wall area can also be offset outwards by this offset compared to the outer side wall area, and the inner embossing elements formed in the inner side wall area are then embossed therein.

[0034] In particular, this comparison of the offset refers to the respective non-embossed areas of the side wall regions in relation to each other.

[0035] In particular, a central and unembossed area of ​​the inner side wall area, bounded by the inner embossing elements and the embossing strip, is offset, especially to the outside, compared to another unembossed area of ​​the outer side wall area.

[0036] One aspect of the invention also relates to a household appliance for the care of laundry items with a laundry care appliance housing according to the above-mentioned aspect or an advantageous embodiment thereof.

[0037] One aspect of the invention relates to a washing drum for a household appliance used for washing laundry. The washing drum has a outer wall. This outer wall is a hollow cylindrical drum shell. It is therefore ring-shaped. In particular, the washing drum can also have a rear wall, so that, viewed along its longitudinal axis, the washing drum is closed at the rear.

[0038] The drum shell features an annular strip. This annular strip has a first radius. Extending forward along the longitudinal axis of the drum, the drum shell has a first expansion ring section. This expansion ring section has a larger radius than the first. Furthermore, extending backward along the longitudinal axis of the drum, the drum shell has a second expansion ring section. This expansion ring section also has a larger radius than the first. Thus, a washing drum is created that, due to its specific shape and geometry, exhibits an increase in volume.

[0039] In particular, this design allows only the groove-like ring strip, relative to the expansion ring areas, to have a radius similar to that found in conventional washing machine drums. Because the multiple, highly specific expansion ring areas expand radially outwards, the entire washing machine drum achieves an increase in volume. This increase is manifested primarily by the radial volumes created by the expansion ring areas, whose radii extend beyond the initial radius. It is precisely this number and arrangement of expansion ring areas, along with the axially interposed ring strip, that ensures high mechanical stability, especially of the drum shell, despite the increased volume. The ring strip stabilizes the drum shell and makes it torsionally rigid.

[0040] Viewed in the axial direction, the annular strip is smaller than the first expansion ring area and / or the second expansion ring area. Therefore, these two expansion ring areas are designed to be axially longer, in particular many times longer, than the annular strip. This maximizes the volume increase of the washing drum while maintaining high stability of the drum shell.

[0041] In one embodiment, the drum shell has localized drive recesses. These are integrated into the drum shell and thus formed integrally with it. The bottoms of the drive recesses are positioned further inward, radially to the longitudinal axis, than the expansion ring areas. This means that any drive elements attached to these recesses do not extend into the expansion ring areas and are therefore preferably not partially protruding into them. Thus, the drive elements project inward with their entire radial height, extending beyond the expansion ring areas, and can therefore be fully utilized for carrying the laundry items.

[0042] In one embodiment, the expansion ring areas are embossed areas. They can therefore be formed by embossing into the drum shell. In particular, a drive recess and / or the ring strip can also be designed as embossed areas in the drum shell.

[0043] In one embodiment, a carrier recess has a base that is at least partially toroidally shaped. This means the base is not completely flat, but specifically curved. This improves both the mounting and the overall positioning of the carrier. In particular, it allows for improved transitions between such a base of the carrier recess and an adjacent ring strip and / or expansion ring area. This prevents unwanted snagging or damage to laundry items at these specific points.

[0044] In one embodiment, a drive recess has a bottom that is at least partially, and in particular completely, conically shaped.

[0045] In one embodiment, a drive recess has a base that is curved around its longitudinal axis in the direction of rotation. This allows the shape of the base to conform to the curvature of the annular strip and / or an adjoining expansion ring area.

[0046] In one embodiment, a drive recess has a base that is curved in the direction of rotation about an axis perpendicular to the longitudinal axis. In particular, the curvature can be formed inwards, towards the longitudinal axis. Thus, viewed axially, the base is not straight in a cross-sectional plane in which the longitudinal axis also runs completely, but rather shaped accordingly, especially concavely. This further reinforces the advantages mentioned above.

[0047] In one embodiment, the radially outwardly open annular strip is designed as a receiving channel, particularly for a radially inwardly extending connection area of ​​a washing tub. The annular strip is therefore both locally specified on the drum shell and geometrically designed for this function. This allows the washing drum and the washing tub to overlap when viewed horizontally. This creates a system between the washing tub and the washing drum, both of which have increased volume and yet retain their full functionality, even with regard to the necessary movements during operation of the appliance.

[0048] In one embodiment, the first expansion ring section is conical. Additionally or instead, the second expansion ring section can also be conical. This means that in a cross-sectional plane where the longitudinal axis of the washing drum is straight, the diameter of an expansion ring section decreases from the ring strip towards an end or edge region opposite the ring strip. In particular, in one embodiment, the drum shell therefore has its largest inner diameter at the location of the ring strip.

[0049] In another embodiment, the first expansion ring section is cylindrical and / or the second expansion ring section is cylindrical. A conical shape for the expansion ring sections is not provided in this case.

[0050] In one embodiment, the drum shell has a radial taper at a front edge region (viewed along the longitudinal axis) compared to the expansion ring regions. Additionally, or alternatively, the drum shell has a radially tapered shape at a rear edge region (viewed along the longitudinal axis of the washing drum) compared to the expansion ring regions. Thus, the expansion ring regions do not extend fully to the front and rear ends of the drum shell in the axial direction, but rather terminate at a setback. This also results in high stiffness precisely at these local points in the region of the drum shell ends.

[0051] Another aspect of the invention relates to a system comprising a washing drum according to the aspect mentioned above or an advantageous embodiment and a tub. The washing drum is housed in the separate tub. The tub surrounds at least the drum wall of the washing drum on its circumference.

[0052] Another aspect of the invention relates to a household appliance for the care of laundry. The household appliance has a washing drum according to the aspect mentioned above or an advantageous embodiment thereof. In particular, the household appliance can also have a tub. The washing drum is arranged in this tub. The household appliance can have a housing in which the washing drum, and in particular also the tub, are received.

[0053] Preferably, the washing drum has an internal volume greater than 65 liters, particularly greater than 66 liters. Preferably, the internal volume is between 66 and 70 liters. In particular, the internal volume is between 67 and 68 liters.

[0054] In one embodiment, a connection area where two separate, annular container parts of the washing tub are joined is arranged to engage radially in the annular strip. This is particularly the case when the washing tub and the drum are at rest, so that they are arranged to overlap radially at this specific local point.

[0055] In particular, the drum shell is formed in one piece. It is made primarily of metal, especially steel, such as stainless steel.

[0056] One aspect of the invention relates to a tub for a household appliance used for washing laundry. The tub comprises a first ring-shaped container part made of plastic. Furthermore, the tub comprises a second ring-shaped container part, also made of plastic, which is separate from the first ring-shaped container part. Along a longitudinal axis of the tub, the second container part is positioned behind the first container part. Thus, the first container part is closer to a loading opening of the tub along this longitudinal axis than the second container part. The two container parts are firmly connected to each other at a joint.

[0057] A rear edge region of the first, and therefore front, container section, viewed along the longitudinal axis of the tub, is shaped radially inwards. A coupling structure for connecting to the other container section is formed at this rear edge region. This coupling structure is specifically designed and positioned to enable a direct connection with the other container section. This coupling structure extends laterally outwards from the edge region in a radial direction. Furthermore, a front edge region of the second, rear container section, viewed along the longitudinal axis, is shaped radially inwards. A counter-coupling structure is formed at this radially tapered front edge region. This counter-coupling structure is designed for coupling with the coupling structure.The counter-coupling structure extends laterally outwards from this tapered front edge region. It is rigidly connected to the coupling structure. Thus, the rear edge region of the first container section and the front edge region of the second container section are arranged facing each other, specifically abutting one another. The coupling structure and the counter-coupling structure mechanically connect the container sections. This concept provides a caustic solution container that only has a specifically designed connection area locally. Viewed from the connection area to other parts of the container sections, this connection area is offset radially inwards. Therefore, particularly when viewed in reverse, the container sections adjoining the connection area axially forwards and backwards project radially further outwards than this rear edge region and the front edge region.This also effectively ensures that the lye container is designed to expand in volume, since the container areas adjoining the connection area of ​​the container parts are moved radially outwards, thus increasing the volume of the lye container.

[0058] The proposed design of the washing machine tub thus ensures, on the one hand, that when installed in the housing of a household appliance, the aforementioned clearance is maintained, particularly to the inner sides of the housing. This also prevents the tub from striking the side walls during operation, even when it is moving relative to them. On the other hand, the tub's volume is increased, especially compared to conventional tubs, allowing for a larger washing drum to be accommodated within it.

[0059] This also makes it possible to increase the volume of the detergent container while still enabling low-wear, and in particular wear-free, operation of the household appliance with such a detergent container.

[0060] In particular, the clear width of the lye container at the radially innermost point of the connection area is between 535 mm and 540 mm.

[0061] Preferably, the clear width, in particular the inner diameter, of the alkaline container in a container area of ​​the container parts that lies outside the connection area is between 554 mm and 560 mm.

[0062] This type of tub allows for more efficient use of the available space within the appliance's housing. Furthermore, this design enables a reduction in the number of dampers required for the appliance's vibration system. Specifically, the number of dampers can be reduced, for example, to three instead of four. This improves the dynamic performance of the vibration system, resulting in noise reduction and lower energy consumption.

[0063] In one embodiment, the rear edge region is continuously bent inwards. In particular, this results in a conical shape in cross-section of this rear edge region.

[0064] It is also possible that the front edge is continuously curved inwards. In one embodiment, this edge can also be conically shaped. When the container parts are assembled, these two edge areas create a trough shape that accommodates the coupling structure and the counter-coupling structure. This trough shape allows the coupling structure and the counter-coupling structure, located at the edges, to be partially recessed within this trough. Consequently, the coupling structure and the counter-coupling structure are also protected to a certain extent axially, and thus along the longitudinal axis, both forwards and backwards.This is because the container areas of the container parts adjoining the tapered edge areas extend radially further outwards, thus forming a certain shading or protection for this coupling structure and the counter-coupling structure to the front and rear.

[0065] In one embodiment, the coupling structure is arranged to project laterally from a rear end or a rear edge of the rear edge region. Thus, the coupling structure is essentially integrally formed at the rearmost point of this rear edge region. This allows it to extend radially to the longitudinal axis as far as possible into the trough shape formed by the edge regions.

[0066] The same applies in an advantageous embodiment to the feedback structure. This too is formed, in particular, at a front end or a front edge of the front edge region and extends radially outwards to the side.

[0067] In one embodiment, the coupling structure is designed as a radial web. In particular, in the assembled final state of the tub, this web extends at least 50 percent, in particular at least 60 percent, in particular at least 70 percent, in particular at least 80 percent, in particular at least 90 percent, in particular at least 100 percent of its radial dimension into the radial recess formed by the tapered edge region. In particular, the web is formed completely and thus also without interruption around the longitudinal axis.

[0068] In one embodiment, the coupling structure is designed as a radial rib which, in a pre-assembled state of the lye container where the container parts are not yet permanently joined at the connection area, extends a maximum of 40 percent, in particular a maximum of 50 percent, and in particular a maximum of 60 percent of its radial dimension into the radial recess formed by the tapered edge region. This means, in particular, that in a pre-assembled state, the coupling structure is longer in the radial direction, or extends further radially outwards from the radial recess, than in the assembled final state. This radial pre-assembly extension is particularly advantageous for joining, especially welding. This is because it allows the required welding pressures to be applied without any disadvantages arising at the relevant points.This is particularly advantageous in vibration welding, where frictional heat occurs.

[0069] In one embodiment, this can also be advantageous in that different locations are possible for aligning the container parts before they are permanently joined, resulting in corresponding positions. To allow for different connection positions for the container parts, a further radial projection of the web outwards is advantageous. This allows the counter-coupling structure to be positioned at various points on the coupling structure in an azimuthal section, or even directly resting on it, before the permanent connection is carried out.

[0070] In such an embodiment, it can be provided that, after the coupling structures have been firmly connected, any unnecessary radial protrusion of the coupling structure is permanently removed. For example, it can be cut off, clipped, or otherwise removed. Thus, even in such an embodiment, the aforementioned advantageous embodiment is achieved in the assembled final state, in which the coupling structure is then arranged within the edge recess formed by the tapered edge region to at least 90 percent of its radial extent.

[0071] In one embodiment, the feedback structure is designed as a radial rib. In the assembled final state of the lye container, the feedback structure extends at least 50 percent, in particular at least 60 percent, in particular at least 70 percent, in particular at least 80 percent, in particular at least 90 percent, in particular at least 100 percent, of its radial dimension into the radial recess formed by the tapered rear edge region. In another embodiment, the feedback structure may be designed as a radial rib which, in a pre-assembly state of the lye container in which the container parts are not yet firmly connected at the joint area, extends a maximum of 60 percent of its radial dimension into the radial recess formed by the tapered front edge region.

[0072] The advantages achievable in this way are as described above for the corresponding examples of the coupling structure.

[0073] In one embodiment, the coupling structure is supported by a support element on the outer side of the rear edge region. This support element thus secures the main area of ​​the coupling structure, which is preferably designed as a radial web. This prevents bending or twisting.

[0074] The aforementioned radial web, which in particular forms a mounting flange for the feedback structure, can have a radial mounting surface for the feedback structure. The feedback structure then rests directly against this surface.

[0075] In one embodiment, the feedback structure is supported by at least one support element on an outer side of the front edge region. The corresponding advantages mentioned for the embodiment of the support element and the coupling structure also apply here. In one embodiment, the support elements can be axially oriented plate-like elements. It is possible that the radial web, which in one embodiment forms the feedback structure, has a contact surface for the coupling structure. It is also possible that the radial web of the feedback structure and / or the radial web of the coupling structure has a receptacle into which the other structure can axially insert. Such a receptacle can, for example, be groove-like. Thus, viewed axially, the structures not only abut each other but are also interlocked or overlapping in this axial direction.This allows for improved positioning and support.

[0076] In one embodiment, the coupling structure and the feedback structure are welded together, creating a permanent connection. This can be achieved, for example, through plastic welding, i.e., by applying specific thermal stress to the plastic materials, resulting in a permanent bond after the material has cooled. A permanent connection, in this context, is specifically a fixed connection that remains permanently in place. In particular, this permanent connection is an inseparable connection, meaning it cannot be separated without destroying the components.

[0077] In one embodiment, this fixed connection is force-fit and form-fit.

[0078] In one embodiment, a rear edge or rear end of the rear edge region is the radially innermost point of the tapered rear edge region. In particular, a front edge or front edge or front end of the front edge region is the radially innermost point of the tapered front edge region.

[0079] In one embodiment, a main section of the outer wall of the front container section, extending forward to the rear edge, is arranged in the same radial position as a main section of the outer wall of the rear container section, extending rearward to the front edge. These main sections are, in particular, the container sections that project radially further outward than the connecting area. Specifically, these main sections connect directly to the respective edge regions. The outer wall, or caustic solution outer wall, is, in particular, the tubular or annular cylindrical wall of the caustic solution container. The caustic solution container may also have a rear wall that closes it off at the rear. The caustic solution container has a filling opening at the front.

[0080] Another aspect of the invention relates to a household appliance for the care of laundry items. The household appliance has a tub according to the aspect mentioned above or an advantageous embodiment thereof. In particular, the household appliance also has a washing drum which is housed within the tub. The tub and the washing drum together form a system. This system is designed to be volume-expandable. This allows a larger quantity of laundry items to be cared for in a single laundry care cycle.

[0081] The household appliance is preferably a washing machine or a washer-dryer.

[0082] It is also possible that the fixed connection of the container parts at the connection point is not characterized by a permanent connection, but rather by a detachable connection, for example. Such a fixed detachable connection could be, for instance, a screw connection or a snap connection.

[0083] In particular, the household appliance has a housing. The washing machine tub is enclosed within the housing. Preferably, the housing has a standard external width dimension. In particular, the width can be between 58 cm and 61 cm, and more specifically between 59 cm and 60 cm.

[0084] Preferably, the width-measured distance between the washing tub and the inner surface of an adjacent side wall of the housing is between 9 mm and 21 mm. More preferably, the distance may be between 10 mm and 13 mm or between 16 mm and 20 mm. Depending on the configuration of the appliance, for example, the spring / damper configuration and / or the spin speed to be achieved, corresponding values ​​may be particularly advantageous. This distance is measured when the washing tub is at rest. Preferably, this distance is measured in the connection area to this inner surface of the side wall. In particular, it is measured from the coupling structure and / or the counter-coupling structure to the inner surface of the side wall.In particular, it is therefore provided that a radially outer end of the coupling structure and / or a radially outer end of the counter-coupling structure is the radially outermost point of the entire alkaline container.

[0085] It may be designed so that such a radial inward displacement of the connection area, particularly in comparison to the axially adjoining container areas of the container parts, is not formed over the entire azimuthal circumference around the longitudinal axis. It is therefore possible that this radial recess is formed in the connection area only in local azimuthal segments.

[0086] For example, this is preferably the case when viewing the tub from the front at the 3 o'clock and 9 o'clock positions. In particular, this specific connection area is only present at the 3 o'clock and 9 o'clock positions. Since a correspondingly smaller distance to the walls, especially the side walls, of the housing exists only at these locations, and since, given the tub's positioning within the housing and its relative movement during operation, a potentially critical approach of the tub to the inner walls of the housing may occur, one embodiment may provide for this specific geometric and functional connection area only at these locations.At other azimuthal positions, this tapered design of the front edge area and / or the rear edge area may therefore not be present or may be less pronounced than in this 3 o'clock position or the 9 o'clock position.

[0087] Exemplary embodiments of the invention are explained in more detail below with reference to schematic drawings. These show: Fig. 1 a schematic representation of an embodiment of a household appliance according to the invention for the care of laundry items with a schematic representation of an embodiment of a washing tub according to the invention and / or an embodiment of a washing drum according to the invention; Fig. 2 a perspective view of an embodiment of a drum shell of a washing drum according to an embodiment of the invention; Fig. 3 a sectional view through an embodiment of a washing drum according to the invention with a drum shell according to Fig. 2 and a mounted driver in a driver recess of the drum shell; Fig. 4 a sectional view through an embodiment of a system with a washing drum according to Fig. 3 and an embodiment of a lye container according to the invention; Fig. 5 a schematic sectional view through an embodiment of a household appliance with an embodiment of a tub according to the invention and / or an embodiment of a washing drum according to the invention; Fig. 6. An enlarged view of a section of a washing machine tub and a section of a washing machine drum; Fig. 7 a representation according to Fig. 6, where a distance between the detergent container and an inside of a side wall of the housing of the household appliance is shown; Fig. 8 a representation according to Fig. 6 and Fig. 7 with an alternative embodiment of a connection area of ​​the lye container; Fig. 9 a schematic sectional view through partial components of an embodiment of a household appliance according to the invention with an explanation of manufacturing scenarios for a washing tub; Fig. 10 a view of an embodiment of a side wall of a laundry care appliance housing with an embossed structure according to a first embodiment; Fig. 11 a view of an embodiment of a side wall of a laundry care appliance housing with an embossed structure according to a second embodiment; Fig. 12 a view of an embodiment of a side wall of a laundry appliance housing with an embossed structure according to a third embodiment; and Fig. 13 a schematic and simplified sectional view through a side wall of an embodiment of a laundry care appliance housing.

[0088] In the figures, identical or functionally equivalent elements are given the same reference symbols.

[0089] In Fig. Figure 1 shows a schematic perspective drawing of a household appliance 1. The household appliance 1 is designed for the care of laundry. It could be, for example, a washing machine or a washer-dryer. The household appliance 1 has a housing 2. This can also be referred to as the outer housing. The housing can also be referred to as the laundry appliance housing 2. This housing 2 has at least two vertical side walls 3 and 4.

[0090] The household appliance 1 also has a tub 5. Furthermore, the household appliance 1 has a drum 6. The tub 5 and the drum 6 form a system 7. This system 7 can be part of a vibration system 8 of the household appliance 1. The vibration system 8 can, for example, have several dampers (not shown). These dampers allow the tub 5 and the drum 6 to be movably mounted in the housing 2. As already described in Fig. As shown schematically in Figure 1, the washing drum 6 is housed in the tub 5. The household appliance 1 also has a detergent dispenser 9. This may, for example, include a dispenser tray. Furthermore, the household appliance 1 has an operating and / or display device 10. In particular, a control unit (not shown) is also provided, which is an integral part of the household appliance 1.

[0091] In Fig. Figure 2 shows a perspective view of the drum shell 11 of the washing drum 6. The drum shell 11 is designed here as a cylinder or a ring. In addition to this drum shell 11, the washing drum 6 preferably has a Fig. 2 not shown back panel 12 ( Fig. 1) on.

[0092] The drum shell 11 is preferably made of metal, in particular stainless steel. The washing drum 6 has a longitudinal axis A. This is also the axis of rotation about which the washing drum 6 is rotatably mounted during a laundry cycle. The drum shell 11 has a groove-like annular strip 13. In this exemplary embodiment, the annular strip 13 is formed continuously around the longitudinal axis A in the drum shell 11. The annular strip 13 is formed in the same axial position over its entire azimuthal extent.

[0093] The ring strip 13 has a radius r1, which is a first radius.

[0094] Furthermore, in Fig. As can also be seen in Figure 2, the drum shell 11 has a first expansion ring region 14. Viewed along the longitudinal axis A, which is oriented in the depth direction (z-direction) of the household appliance 1, this region adjoins the annular strip 13 directly at the front. Furthermore, the drum shell 11 has a second expansion region 15, distinct from the first expansion region 14. Viewed along the longitudinal axis A, this second expansion region adjoins the annular strip 13 at the rear, and in particular directly adjacent to it. The expansion regions 14 and 15 each have a radius larger than the first radius r1. Specifically, both expansion regions 14 and 15 have the same second radius r2, which is larger than the first radius r1. The annular strip 13 is therefore radially smaller in relation to the expansion ring regions 14 and 15.

[0095] Furthermore, it can also be seen that the expansion ring areas 14 and 15 have a larger dimension in the axial direction and thus in the direction of the longitudinal axis A than the annular strip 13. In particular, this axial extension of the expansion areas 14 and 15 is many times, in particular at least three times, in particular at least four times, larger than the axial extension of the annular strip 13.

[0096] In particular, it is provided that only one such annular strip 13 is formed between the expansion areas 14 and 15.

[0097] In one embodiment, viewed axially, the first expansion ring section 14 terminates before a front end or front edge 16 of the drum shell 11. Thus, a front end 14a of the first expansion ring section 14 is set back from the front edge 16. In particular, a section 17 extending between the front end 14a and the front edge 16 has a smaller radius than the radius r2. This section 17 can, for example, also be conical.

[0098] In one embodiment, the drum shell 11 has a rear end or a rear edge 18. In particular, a rear end 15a of the second expansion ring region 15 is set back from this rear edge 18. Specifically, a region 19 between the rear edge 18 and the rear end 15a has a smaller radius than the second radius r2. Here, too, a conical shape of the region 19 can be provided, at least partially.

[0099] As in Fig. As can be seen in Figure 2, the drum shell 11 also has several drive recesses 20 and 21. In particular, three such drive recesses 20, 21 are provided. They are designed to be equidistant from each other, especially in the direction of rotation around the longitudinal axis A. As shown in Figure 2, the drum shell 11 also has several drive recesses 20 and 21. In particular, three such drive recesses 20, 21 are provided. They are designed to be equidistant from each other in the direction of rotation about the longitudinal axis A. Fig. As can be seen in Figure 2, these carrier recesses 20, 21 are designed to accommodate carriers (not shown) for carrying laundry items as the washing drum 6 rotates. The carrier recess 21 preferably has a base 22. This base can preferably be toroidal or conical in shape. In particular, this base 22 has a curvature when viewed in the direction of rotation around the longitudinal axis A, especially a curvature that bulges away from the longitudinal axis A.

[0100] In particular, it is provided that this base 22 is curved in the direction of rotation about an axis perpendicular to the longitudinal axis A. This means that in a cross-section of the drum shell 11 where the cutting plane has the longitudinal axis A or where the longitudinal axis A is arranged entirely within it, the cut edge of the base 22 is not straight. With such a curved shape of the base 22, the cut surface of the base 22 is curved in this described cutting plane, in particular concavely curved. This means that the ends of this curved base 22, viewed in the axial direction, are further away from the longitudinal axis A than an intermediate maximum of curvature, which then has the smallest radial distance to the longitudinal axis A.

[0101] As in Fig. As can also be seen in Figure 2, the annular strip 13 transitions directly into the drive recesses 20 and 21. Viewed in the axial direction, the annular strip 13 terminates in a middle axial third of a drive recess 20, 21, in particular completely in the center of a drive recess 20, 21.

[0102] A drive recess 20, 21 has a smaller distance to the longitudinal axis A than the expansion ring regions 14 and 15 with their second radii r2. In particular, in one embodiment, a drive recess 20, 21 is therefore raised above the expansion ring regions 14 and 15 with respect to the longitudinal axis A. When viewed from an expansion ring region 14, 15, a drive recess 20, 21 can therefore also be referred to as a drive riser.

[0103] As can also be seen, the drive recesses 20, 21 do not extend in the axial direction beyond the axial dimensions of the expansion ring areas 14 and 15; in particular, they are shorter in this respect.

[0104] Furthermore, the fastening structures in the drive recesses 20, 21 are provided only as examples in order to be able to attach a drive unit.

[0105] This structure in the drum shell 11, which includes the expansion ring areas 14 and 15, the ring strip 13, and preferably also the drive recesses 20, 21, can be produced by embossing. For this purpose, an embossing die can be arranged on the outside of the still undeformed material blank of the already ring-shaped drum shell 11. This die has the negative pattern of the described structure. By means of corresponding expansion elements arranged inside the drum shell 11, the areas forming the expansion ring areas 14 and 15 are then pressed outwards.

[0106] In one embodiment, the ring strip 13 continues to have the first radius r1 that the drum shell 11 has before this expanding embossing.

[0107] Accordingly, in one embodiment, the punch can also have a corresponding negative structure or negative mask for generating the drive recesses 20, 21. Here, too, the exemplary shapes mentioned above can be produced by applying appropriate pressure from inside the drum shell 11.

[0108] The annular strip 13 is designed both locally and geometrically as a receiving channel for a radially inwardly formed connection area of ​​the alkali container 5.

[0109] In the exemplary embodiment, the expansion ring areas 14 and 15 are cylindrical. In another exemplary embodiment, as it then further Fig. As explained in section 5, the expansion ring areas 14 and 15 can also be cone-shaped.

[0110] In Fig. Figure 3 shows a longitudinal section of the washing drum 6. Fig. 3 is therefore also visible on the inside of the drum shell 11. A drive element 23 is mounted in the drive recess 20 as an example. Furthermore, a front attachment 6a of the washing drum 6 can also be seen, which in one embodiment is arranged at the front edge 17.

[0111] As in Fig. 2 and Fig. As can be seen in Figure 3, the transitions between the base of the ring strip 13 and the expansion ring areas 14 and 15 are inclined and / or rounded in the example. The same is preferably provided for the transitions between the base of the drive recess 20 and the expansion ring areas 14 and 15.

[0112] In Fig. Figure 4 shows a longitudinal section of the washing drum 6 and an embodiment of a tub 5. Therefore, an embodiment of a system 7 is shown. The washing drum 6 is preferably, according to the embodiment, in Fig. 2 and Fig. 3 trained.

[0113] In particular, the drum shell 11 is in one piece or formed from a single piece blank.

[0114] In contrast, the alkaline container 5 has a multi-part construction. It preferably comprises a first annular container part 24. This is made of plastic, in particular entirely of plastic. It can, for example, be an injection-molded component. Furthermore, the alkaline container 5 comprises a second container part 25, separate from the first container part 24. This is also made of plastic. It can also be an injection-molded component. The two separate container parts 24 and 25 are firmly connected to each other at a connecting area 26. As already described in Fig. As can be seen in Figure 4, this connection area 26 is located further inwards in the radial direction than the main areas or expanded container areas 27 and 28 of the container parts 24 and 25 that adjoin the connection area 26 in the axial direction to the front and rear. It can also be seen that this connection area 26, viewed perpendicular to the longitudinal axis A, engages in or extends into the annular strip 13 of the drum shell 11. Therefore, in this assembled final state of the system 7, viewed perpendicular to the longitudinal axis A, an overlapping arrangement is formed between the washing container 5 and the washing drum 6 at this specific local point. A rear wall 29 of the washing container 5 is also shown.

[0115] In Fig. Figure 5 shows a further embodiment of the system 7 in a schematic sectional view. This sketch shows that the washing drum 6, particularly in the expansion areas 14 and 15, does not have wall sections coaxial with the longitudinal axis A, but rather a conical orientation of the expansion areas 14 and 15. In this example, the container sections 27 and 28 are therefore also conical in shape.

[0116] In Fig. Figure 6 shows an enlarged illustration of an embodiment of the lye container 5 in the connection area 26. As can be seen here, an axially rear edge region 30 of the first front annular container part 24 is continuously tapered radially inwards. Furthermore, in one embodiment, a front edge region 31 of the rear second annular container part 25, viewed in the direction of the longitudinal axis A, is continuously tapered radially.

[0117] This results in a radial recess 32 being formed with respect to the radial positions of these edge regions 30 and 31 and the container regions 27 and 28. A coupling structure 33 and a counter-coupling structure 34 extend into this radial recess 32. The coupling structure 33 is integrally formed on the rear edge region 30. It may have a radial web 35. In particular, this radial web 35, which extends into Fig. Figure 6 is shown only schematically and symbolically, from a front end or a rear edge 36 of this rear edge region 30. In addition, in an exemplary embodiment, the front edge region 34 may have a radially oriented web 37. In an exemplary embodiment, this web may extend radially outwards from a front end or a front edge 38 of this front edge region 31.

[0118] It is possible that the coupling structure 33 and / or the counter-coupling structure 34 merely have contact surfaces where these two structures abut each other. However, at least one of the two structures, i.e., the coupling structure 33 and / or the counter-coupling structure 34, can also have axial recesses into which the other structure can then be inserted axially. This can also create a connection area 20 in which the structures 33 and 34 are axially interlocked. Furthermore, this axial interlocking can also form a radial stop, so that the position of the container parts 24 and 25 perpendicular to the longitudinal axis A is variable, but limited by these stops.

[0119] As in Fig. As can be seen in Figure 6, the coupling structure 33 and the counter-coupling structure 34, with their dimensions considered perpendicular to the longitudinal axis A, extend at least 90 percent within the radial trough 32. This is shown schematically in Figure 6. Fig. Figure 6 shows the assembled final state of the tub 5.

[0120] In reverse terms, the alkali container 5 has expanded radially outside the connection area 26. Container areas 27 and 28 are therefore also expanded radially.

[0121] A distance b, as it is in Fig. 6 is dimensioned perpendicular to the longitudinal axis A and is measured between the radial minimum of the connection area 26 and the bottom of the ring strip 13, is preferably between 10 mm and 12 mm in an example.

[0122] In Fig. 7 is a representation according to Fig. Figure 6 shows a distance a, measured perpendicular to the longitudinal axis A, between a radially outer point of the connection area 26 and an inner side wall, here by way of example the side wall 4. This distance a is preferably between 9 mm and 13 mm or between 16 mm and 20 mm.

[0123] In Fig. 8 is a corresponding representation as in Fig. 6 and Fig. 7 shown. However, here, unlike in Fig. 6 and Fig. Figure 7, which shows assembled final states, depicts a pre-assembled state of the tub 5. The coupling structure 33 and / or the counter-coupling structure 34 are here still formed in the radial direction to the longitudinal axis A with a dimension that projects significantly further laterally beyond the radial recess 32 than in the manufactured final states according to the figure. Fig. 6 and Fig. 7 is the case. In particular, the radial webs 35 and 37 have radial projections. These are preferably provided so that the position perpendicular to the longitudinal axis A can be variably adjusted during manufacturing and before joining the container parts 24 and 25. This extension is provided here to prevent a situation where, in an azimuthal position in the direction of rotation around the longitudinal axis A, there would no longer be any contact between the coupling structure 33 and the counter-coupling structure 34 when viewed radially. Once the desired final position between the container parts 24 and 25 has been set, and the fixed connection between the coupling structures 33 and the counter-coupling structure 34 has been established, for example by welding, screwing, or snapping, the no longer required radial projection of the webs 35 and / or 37 can be cut off in a further manufacturing step. This then results in a corresponding configuration as described in Fig. 6 and Fig. Figure 7 is shown schematically. Even then, in the finished state, a distance a is achieved which is maintained when system 7 is at rest and thus the household appliance 1 is not in operation.

[0124] As in Fig. As can also be seen in Figure 8, and as may be present in all other embodiments, the connection area 26 has at least one support element 40. This is integrally formed on the coupling web 35 and terminates on the outside of the tapered edge region 30 and / or optionally also beyond it on an outside of the container area 27. In one embodiment, at least one further support element 39 is provided. This is integrally formed on the web 37 and terminates on an outside of the edge region 31. Optionally, it may also extend axially to such an extent that it terminates on an outside of the container area 28. The support elements 39 and 40 can, for example, be plate-like. In particular, they are formed integrally with the respective container parts 24 and 25.

[0125] Especially when the container parts 24 and 25 are made of plastic, tools are provided that also allow for corresponding undercuts. These can be demolded using so-called slides. It is possible that when joining the container parts 24 and 25, for example by welding, vibration welding can be used. For instance, a welding tool with a holding device is provided. One of the two container parts 24, 25 can then be attached to the holding device. In a subsequent step, the washing drum 6 is inserted into this container part. Following this, the other container part of the washing tub 5 is positioned over the washing drum 6 from above. This additional container part of the washing tub 5 is then, as described in Fig. As shown in Figure 9, the component is moved in a vibration direction V, oriented perpendicular to the longitudinal axis A, with a specific amplitude and simultaneously moved translationally in direction Y (depth direction z), i.e., in the direction of the longitudinal axis A. This exerts pressure on the flange formed by the coupling structure 33 and the counter-feedback structure 34.

[0126] It is possible that the radial extent of the preferably fully circumferential coupling webs 33 and / or the counter-coupling structure 34 differs in azimuthal sections. For example, this radial extent may be smaller at the 3 o'clock and 9 o'clock positions than in other azimuthal sections. Therefore, the scenario according to [reference to relevant section] is particularly relevant during pre-assembly. Fig. Figure 8 provides that a temporary protrusion is also formed at the 3 o'clock and 9 o'clock positions, which is then removed after the permanent connection is established, so that the dimension or distance a is also set at these 3 o'clock and 9 o'clock positions. This allows a stable and tight seal of the connection area 26 to be created, particularly at these narrower points between the alkaline container 5 and a side wall 3, 4 compared to other azimuthal positions. Once this permanent connection is formed, the no longer required protrusion, especially at the 3 o'clock and 9 o'clock positions, can subsequently be removed. For example, an ultrasonic cutting process can be used for this purpose.

[0127] The holding tool or holding device, as mentioned above, moves radially towards the outside of the container part that is initially provided and into which the washing drum 6 is then inserted. Specifically, this slider moves radially towards the outer edge of the container part that is initially provided.

[0128] This holds the pre-assembly module in place with the provided container part and the washing drum 6 inserted into it. Subsequently, in this held position, the aforementioned welding tool is used to create the permanent connection at the connection area 26 between the two container parts 24 and 25.

[0129] This permanent joining, especially welding, takes place when, according to the explanation, Fig. 9 the desired position between container parts 24 and 25 is reached.

[0130] In Fig. Figure 10 shows a view of the side wall 3. The side wall 4 can preferably be designed accordingly. In particular, a view of an outer surface 3a of the side wall 3 facing away from the washing drum 6 and the tub 5 is shown. The side wall 3 of the laundry appliance housing 2 has an integrated embossed structure 41.

[0131] The side wall 3, as it is called Fig. 10 and subsequently also to Fig. 11 and Fig. 12 as well Fig. As explained in section 13 as an example, it can be a component of a household appliance 1 for the care of laundry items, as is the case with Fig. 1 to Fig. 9 explained. In particular, this laundry care appliance housing 2 with the advantageous side walls 3 and 4, as shown in the embodiments in Fig. 10 to Fig. 13 will be explained, which is advantageous in a system with a tub 5 and / or a drum 6, as it is to Fig. 1 to Fig. 9 was explained. In particular, if a connection area 26 is provided, the described design of an adjacent side wall 3 and / or 4 with a corresponding embossed structure 41 is especially advantageous.

[0132] The embossed structure 41 is integrated into the side wall 3. This means that it is formed integrally with it. In particular, the embossed structure 41 is formed by embossing the side wall 3, which is preferably provided as a flat plate.

[0133] The embossing structure 41 has an embossing strip 42. The embossing strip 42 is a closed, circumferential strip. It is formed without corners. In particular, it is formed as a ring, specifically as a circular ring. The embossing strip 42 is formed here specifically as a closed groove.

[0134] The embossing strip 42 has a radially outer boundary contour 42a and a radially inner boundary contour 42b relative to a center point M of the embossing structure 41.

[0135] The thickness d1, and thus the radial thickness d1 of the embossing strip 42, is preferably between 25 mm and 35 mm, particularly between 28 mm and 32 mm. This thickness d1 is also dimensioned perpendicular to a longitudinal axis of the embossing strip 42, this longitudinal axis being drawn in the direction of rotation around the center point M.

[0136] An inner side wall region 43 of the side wall 3, surrounded and thereby bounded by the embossing strip 42, is formed. In this inner side wall region 43, which in this example is circular, at least two separate, internal embossing elements 44 and 45 are formed. These embossing elements 44 and 45, which are embossed without contact with the embossing strip 42 and are separately embossed, are not completely closed. In the exemplary embodiment, they are as follows: Fig. 10 are formed as embossing sheets. The embossing sheets can have the same radius along their entire length. However, they can also have a radius that varies along the longitudinal axis. As in Fig. As can be seen in Figure 10, the embossing elements 44 and 45, which can also be referred to as inner embossing elements, extend over a base length that is less than 180°, in particular between greater than or equal to 90° and less than or equal to 160°. Furthermore, in Fig. Figure 10 shows an axis S. This represents an axis of symmetry. It is a horizontal axis. It is oriented specifically in the depth direction. The embossing structure 41 with the two inner embossing elements 44 and 45 is symmetrical about this axis S.

[0137] The embossing elements 44 and 45 have ends 44a and 44b, and 45a and 45b, respectively. A distance a1, dimensioned between ends 44a and 45a and / or between 44b and 45b, is preferably between 120 mm and 180 mm, particularly between 140 mm and 160 mm, and especially between 145 mm and 155 mm. This distance a1 is therefore dimensioned perpendicular to the axis S. It is dimensioned here particularly in the vertical direction. It is dimensioned between the two ends of the different embossing elements 44 and 45, which form the termination of an arc-shaped embossing element 44, 45 on the same side.

[0138] In one embodiment, the distance a2 between opposing points of the embossing strip 42 is between 350 mm and 480 mm, particularly between 400 mm and 440 mm, and especially between 410 mm and 430 mm. This distance a2 is defined, in particular, by the center point M. In this embodiment, it represents the diameter of the embossing strip 42, which is designed as a circular ring. Specifically, this diameter is measured at the inner boundary contour 42b.

[0139] In particular, this distance a2 is measured perpendicular to the distance a1. Furthermore, in Fig. Figure 10 shows a further distance a3. This distance represents the distance between two ends 44a and 44b of a single embossing element 44. A corresponding distance a3 is also dimensioned here between the ends 45a and 45b of the embossing element 45. This distance a3 is preferably between 240 mm and 300 mm, particularly between 260 mm and 290 mm, and especially between 270 mm and 280 mm. In particular, this distance a3 is dimensioned in the horizontal direction, and especially in the depth direction.

[0140] The embossing strip 42 and the two inner embossing elements 44 and 45 form a central area 46 in the inner side wall area 43. This area is elliptical or ellipse-like, roughly approximating the shape of an ellipse. It is sketched or symbolized here by a schematically represented ellipse.

[0141] This central area 46 is, in particular, an unembossed or unembossed area. In the Fig. In the embodiment shown in Figure 10, the embossing elements 44 and 45 are also designed as strips. They preferably have the same thickness d1 as the embossing strip 42.

[0142] In the embodiment according to Fig. The embossing structure 41 has further embossing elements 47 and 48. These are also preferably symmetrical about the axis S. They are designed as outer embossing elements 47 and 48. This means that they are not formed in the inner side wall region 43, but rather in an outer side wall region 49 of the side wall 3, which extends outside the embossing strip 42. The outer embossing elements 47 and 48 are designed as non-circular elements, in particular not as circular strips. They are designed as embossing arcs. Preferably, they extend over an arc length or an azimuthal width around the center point M, which is less than 180°, in particular between 90° and 160°.

[0143] These additional embossing elements 47 and 48 can also have a thickness d1.

[0144] In one embodiment, the embossing structure 41 has a further, outer embossing element 50. This element is formed only on one side of the axis S, specifically in a lower region below the axis S in the vertical direction. In particular, this further embossing element 50 is designed correspondingly to the adjacent outer embossing element 48. The further embossing element 50 is essentially parallel to the outer embossing element 48. In particular, it can also have a thickness d1.

[0145] In Fig. Figure 10 also shows a sweep length 51. This is shown here as an example for the embossing element 45 at end 45b. The sweep length 51 is an axial length and thus a length in the direction of the longitudinal axis of the embossing element 45. It represents the length over which the level of the embossing element 45 changes from the base of the embossing element 45 to the level of the unembossed side wall area 43. In particular, this sweep length 51 is formed to be between 55 mm and 60 mm. In particular, such a sweep length 51 is formed at ends 44a, 44b, 45a, 45b. In particular, it can also be formed at the ends of the outer embossing elements 47 and 48 and / or at the axial ends of the further outer embossing element 50.

[0146] In the Fig. 10 to 12 this sweep length 51 is symbolized in the individual embossing elements 44, 45, 47, 48, 50, 51, 52 by the dashed areas, especially at the ends and edges.

[0147] It is preferably provided that in the assembled final state, the connection area 26 already mentioned, if such a connection area is formed, is arranged in the area of ​​the inner side wall area 43, in particular in this ellipse-like area 46, both in the depth direction and in the height direction.

[0148] In Fig. Figure 11 shows another embodiment of a side wall 3. The view is as shown in Fig. 10. Unlike Fig. In this case, the continuous embossed strip 42 is not a circular ring. Rather, it represents a ring with a radius that varies in the azimuthal direction. In particular, it resembles a quadrilateral with rounded corners, with some corners arranged in pairs at the same height and other pairs at the same depth.

[0149] Here too, the inner embossing elements 44 and 45 are designed as non-circular embossing elements. Their shape and alignment correspond to the adjacent sections of the embossing strip 42, so that here too it is preferably provided that the inner embossing elements 44 and 45 are formed parallel to corresponding sections of the embossing strip 42 along their length. With regard to the further explanation, it may also be noted that... Fig. 11 on Fig. 10 will be referred.

[0150] In Fig. Figure 12 is another embodiment of a side wall 3 in a corresponding view as in Fig. 10 and Fig. 11 shown. Unlike Fig. 10 and Fig. 11 Here too, the circumferentially closed embossing strip 42 is individually formed. It is shaped as a rhombus. The inner embossing elements 44 and 45 are not formed as strips, but as individually shaped recesses, in particular as triangular recesses. Furthermore, in the exemplary embodiment according to Fig. Twelve further outer embossing elements 51 and 52 are formed. These are also the outer embossing elements 51 and 52. They are not symmetrical about the axis S. Furthermore, they differ from the embossing element 50 formed in the lower area, which is further along and furthest from the center point M. The other explanations apply here as well, as described above. Fig. 10 and Fig. As explained in section 11, particularly with regard to the spacing and / or extension lengths. In this context, it is possible that the outer embossing elements 47, 48, 50, 51, and 52 also have a thickness different from d1. They may have a greater thickness in this respect. The triangular depressions formed here, which describe the inner embossing elements 44 and 45, may also preferably have a corresponding extension length in the vertical direction, i.e., towards the center point M.

[0151] In Fig. In a schematic sectional view, 13 is a sub-area of Fig. Figure 10 shows a schematic cross-sectional view along section line XIII-XIII. Fig. Figure 10 shows that, not only in this embodiment, it can be provided that the unembossed part of the inner side wall area 43, in particular at least the central area 46, is offset outwards in both directions relative to the outer side wall area 49. Such an offset a4, measured in the width direction, is shown in Fig. Figure 13 shows an example. This offset a4 can be between 0.5 mm and 2 mm, in particular between 0.5 mm and 1.5 mm, and in particular between 9 mm and 1.1 mm.

[0152] In another embodiment, it is also possible that only this central area 46 has such an offset a4 to the outer side wall area 49. Then, for example, the portion of the inner side wall area 43 formed between the embossing strip 42 and an adjacent inner embossing element 44, 45 is not offset outwards by such an offset a4. The offset a4 may be smaller in this respect or may not be present at all. Then this portion of the inner side wall area 43 is virtually without offset and thus at the same width as the outer side wall area 49. Fig. 13 merely symbolically indicates the position of the connection area 26. Reference symbol list 1 household appliance 2 cases 3 side wall 4 side wall 5 tubs 6 washing drum 6a Essay 7 System 8 Oscillation system 9 Care product dispensing device 10 Display device 11 Drum shell 12 Back panel 13 ring strips 14 Expansion ring area 15 Expansion ring area 16 Edge 17 Edge area 18 Edge Area 19 20 drive recess 21 Drive recess 22 Floor 23 drivers 24 container parts 25 Container part 26 Connection area 27 Container area 28 Container area 29 Back panel 30 Edge area 31 Edge area 32 Radial trough 33 Coupling structure 34 Negative feedback structure 35 coupling bridge 36 Edge 37 Bridge 38 Edge 39 Support part 40 Support part 41 Embossing structure 42 embossing strips 42a Boundary contour 42b Boundary contour 43 Side wall area 44 embossing element 44a End 44b End 45 embossing element 45a End 45b End 46 area 47 embossing element 48 embossing element 49 Side wall area 50 embossing element 51 embossing element 52 embossing element QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 0 043 429 A1

[0002]

Claims

[1] Laundry appliance housing (2) with a side wall (3, 4) having an integrated embossing structure (41) with which the side wall (3, 4) is stiffened, wherein the embossing structure (41) has an embossing strip (42) which is closed all around, so that an inner side wall area (43) surrounded and thereby bounded by the embossing strip (42) is formed, characterized by , that in the inner side wall area (43) at least two separate, internal embossing elements (44, 45) are formed, which are also separate from the embossing strip (42), wherein the internal embossing elements (44, 45) are formed as not being completely closed. [2] Laundry care appliance housing (2) according to claim 1, characterized by , that the internal embossing elements (44, 45) are symmetrical to an axis (S) of the embossing structure (41), in particular a horizontal axis. [3] Laundry care appliance housing (2) according to claim 1 or 2, characterized by, that the internal embossing elements (44, 45) are designed as embossing sheets. [4] Laundry care appliance housing (2) according to claim 3, characterized by that the embossing sheets have the same radius over their entire length. [5] Laundry care appliance housing (2) according to claim 3, characterized by that the embossing sheets have a variable radius along their entire length. [6] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by , that the embossing sheets have a length that is less than a circumferential length formed around a center point (M) of the embossing structure (41) of 180°. [7] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by that the embossing sheets are formed as strips. [8] Laundry care appliance housing (2) according to any one of the preceding claims 1 to 6, characterized by , that the embossing elements (44, 45) have a triangular shape. [9] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by , that the embossing strip (42) and the internal embossing elements (44, 45) form at least a predominantly elliptical (ellipse-like) boundary contour (46) for a surface area bounded by it in the inner side wall area (43). [10] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by , that the embossing strip (42) is formed as a circular ring. [11] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by , that the embossing strip (42) is formed as a ring with a variable radius, in particular as a rhombus or as a square. [12] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by, that the embossing structure (41) has further, outer embossing elements (47, 48, 50, 51, 52) which are formed in an outer side wall area (49) of the side wall (3, 4), wherein the outer side wall area (49) is separated from the inner side wall area (43) by the embossing strip (42). [13] Laundry care appliance housing (2) according to claim 12, characterized by , that the outer embossing elements (47, 48, 50, 51, 52) are not formed as completely closed. [14] Laundry care appliance housing (2) according to any one of the preceding claims, characterized by , that, viewed in the plane of the side wall (3, 4), a distance (a1) between two ends (44a, 45a; 44b, 45b) of the at least two internal embossing elements (44, 45) is smaller than a distance (a2) between opposite points of the embossing strip (41) measured in the plane of the side wall (3, 4) and through a center point (M) of the embossing structure (41). [15] Household appliance (1) for the care of laundry items comprising a laundry care appliance housing (2) according to one of the preceding claims.

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